CBSE Class 12 Physics 2017 Outside Delhi Set 3 Paper

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Question : 7
Total: 8
The following graph shows the variation of photocurrent for a photosensitive metal :

(a) Identify the variable X on the horizontal axis.
(b) What does the point A on the horizontal axis represent?
(c) Draw this graph for three different values of frequencies of incident radiation v1,v2 and v3(v1>v2>v3) for same intensity.
(d) Draw this graph for three different values of intensities of incident radiation I1,I2 and I3 (I1>I2>I3) having same frequency.
Solution:  
(a) Identification of X
(b) Identification of point A
(c) Graph for three different frequencies
(d) Graph for three different intensities.
(a) X is collector plate potential.
(b) A is stopping potential.
(c) Graph for different frequencies
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